Finding the Fourth Proportional to 64,490.67, 89,005.56 and 36,196.36

Step by Step Solution

1. Step 1: Write the proportion equation
   64,490.67 : 89,005.56 = 36,196.36 : x
2. Step 2: Convert to fraction form
   64,490.67/89,005.56 = 36,196.36/x
3. Step 3: Cross multiply
   64,490.67x = 89,005.56 × 36,196.36
4. Step 4: Simplify right side
   64,490.67x = 3,221,677,069.25
5. Step 5: Solve for x
   x = 3,221,677,069.25/64,490.67
6. Step 6: Final answer
   x = 49,955.71